Acreage Calculator: Land & Property Boundary Area
Use this acreage calculator to determine total property acreage from parcel boundary measurements, boundary dimensions, or total square footage. Features rectangular, triangular, and irregular quadrilateral plot shapes with instant metric hectare conversions.
Parcel Size: 5 Acres (217,800 sq ft / 2.02 Hectares). Approx 4.54 regulation football fields.
| Boundary Geometry | Rectangle (330' × 660') |
|---|---|
| Total Land Acreage | 5 Acres |
| Metric Hectares (ha) | 2.023 Hectares |
| Square Footage (sq ft) | 217,800 sq ft |
| Square Yards (yd²) | 24,200 sq yds |
| Square Meters (m²) | 20,234.3 m² |
| Football Field Scale (300'×160') | 4.54 fields |
How to Measure for Acreage Calculator
- Locate property boundary stakes, iron pins, or plat map boundary dimensions in feet or meters.
- For rectangular parcels, measure straight front-to-back depth and street frontage width.
- For irregular parcels, divide the plot into geometric sections (rectangles and right triangles) or enter all four boundary side lengths.
- If you only have total square footage from county property tax records, enter the square feet directly for instant conversion to acres and hectares.
How the Calculation Works
One acre is defined as exactly 43,560 square feet (historically the area of land tilled in one day by a yoke of oxen: 1 chain by 1 furlong, or 66 ft × 660 ft). For simple rectangular parcels: `Acres = (Length ft × Width ft) / 43,560`. For general four-sided quadrilaterals with side lengths a, b, c, d, the calculator utilizes Bretschneider's formula or an approximate averaging formula `Area ≈ ((a + c) / 2) × ((b + d) / 2)` when interior angles are approximately orthogonal.
- Total square footage = 330 ft × 660 ft = 217,800 sq ft. Divide by square feet per acre: 217,800 / 43,560 = 5.00 acres exactly. In metric hectares: 217,800 × 0.092903 / 10,000 = 2.023 hectares.
Acreage Calculator Reference & Specifications
| Land Area Unit | Square Feet (sq ft) | Acres | Metric Hectares | Visual Reference Comparison |
|---|---|---|---|---|
| Quarter Acre (1/4 ac) | 10,890 sq ft | 0.25 ac | 0.101 ha | Standard suburban single-family home lot |
| Third Acre (1/3 ac) | 14,520 sq ft | 0.33 ac | 0.135 ha | Spacious suburban residential lot |
| Half Acre (1/2 ac) | 21,780 sq ft | 0.50 ac | 0.202 ha | Large suburban lot with detached outbuilding |
| American Football Field | 48,000 sq ft | 1.10 ac | 0.446 ha | Field between goal lines (300 ft × 160 ft) |
| One Full Acre (1 ac) | 43,560 sq ft | 1.00 ac | 0.405 ha | Approx 208.7 ft × 208.7 ft square |
| Five Acres (5 ac) | 217,800 sq ft | 5.00 ac | 2.023 ha | Hobby farm / mini-homestead parcel |
| Ten Acres (10 ac) | 435,600 sq ft | 10.00 ac | 4.047 ha | Rural woodlot / small agricultural holding |
| One Hectare (1 ha) | 107,639 sq ft | 2.471 ac | 1.000 ha | 100 meters × 100 meters square |
Frequently Asked Questions About Acreage Calculator
How many square feet are in an acre of land?
There are exactly 43,560 square feet in one acre. In square yards, an acre is 4,840 square yards. In metric terms, one acre equals approximately 4,046.86 square meters or 0.4047 hectares.
What are the dimensions of a 1-acre lot?
An acre can be any shape, but if it is a perfect square, each side measures approximately 208.71 feet (approx 63.61 meters). A rectangular acre could be 100 feet wide by 435.6 feet long, or 66 feet wide (1 surveyor chain) by 660 feet long (1 furlong).
How do I calculate acreage for an irregularly-shaped piece of property?
The most accurate DIY method is to break the property outline into simpler geometric shapes: rectangles, right triangles, and trapezoids. Calculate the area of each shape in square feet, sum them together, and divide the total by 43,560.
How many football fields fit inside an acre?
A standard American football field (without end zones) measures 300 ft × 160 ft = 48,000 sq ft, which is about 1.1 acres. Including the two 30-ft end zones, the total field footprint is 360 ft × 160 ft = 57,600 sq ft, or about 1.32 acres. Therefore, 1 acre is slightly smaller than a full regulation football field.
How do I convert acres to metric hectares?
Divide the number of acres by 2.47105 (or multiply by 0.404686). For example, a 10-acre property equals 10 × 0.404686 = 4.05 hectares. One hectare equals 10,000 square meters or 2.471 acres.